{
  "$type": "site.standard.document",
  "description": "Provided is a pneumatic tire that can provide reduced rolling resistance and ensured shock burst resistance while improving steering stability during high-speed travel, these being provided in a highly compatible manner. In a pneumatic tire including a carcass layer (4) and a belt cover layer (8)…",
  "path": "/patents/1396611",
  "publishedAt": "2025-07-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C9/0042",
    "YOKOHAMA RUBBER CO LTD [JP]"
  ],
  "textContent": "Provided is a pneumatic tire that can provide reduced rolling resistance and ensured shock burst resistance while improving steering stability during high-speed travel, these being provided in a highly compatible manner. In a pneumatic tire including a carcass layer (4) and a belt cover layer (8), the carcass layer (4) is constituted by a carcass cord made of polyester fiber, the elongation at break of the carcass cord is from 20% to 30%, a product (A) of fineness based on corrected mass (D) and a count (Ec) is from 1.8 × 10 dtex/50 mm to 3.0 × 10 dtex/50 mm, the belt cover layer (8) is constituted by a composite cord obtained by intertwining aramid fiber and another organic fiber, a cord diameter of the composite cord is 0.75 mm or less, tensile strength at break per width of 50 mm is 14 kN/50 mm or more, and an elastic modulus per width of 50 mm at 2 to 5% elongation is from 1.7 kN/(50 mm·%) to 2.3 kN/(50 mm·%).",
  "title": "PNEUMATIC TIRE"
}